Definitions:
Definitions in relation to their use in kangaroo words, taken from Google Dictionary, and edited for formatting.
Kangaroo word: supremacist
Joey word: racist
supremacist (noun): an advocate of the supremacy of a particular group, especially one determined by race or sex.
racist (noun): a person who shows or feels discrimination or prejudice against people of other races, or who believes that a particular race is superior to another.
Accessibility explanation:
The letters R, A, C, I, S, and T found within the kangaroo word “supremacist” arrange in the listed order to complete the joey word “racist”. While a word can have multiple definitions, in relation to their use with kangaroo words, these two words share a similar meaning: a scumbag.